I want to use 3/4mdf instead of 1"mdf. Im using bls instead of btls. The 3/4 will give me 9.32^3 before displacement whereas the 1" only gave me 8.?^3 so that would be great. And i'll be using threaded rods for the bracing. I want it tuned to 32hz after diplacement of everything.

Here is my current design
http://i4.photobucket.com/albums/y124/bookechu/box215s.jpg